Mercedes-Benz G-class (W463) since 1999 of release
1. Introduction
2. Governing bodies and operation receptions
3. Current leaving and service
4. Engine
5. Systems of cooling, heating, ventilation and air conditioning
6. A power supply system and production of the fulfilled gases
7. Systems of electric equipment of the engine
8. Automatic transmission
9. Transmission line
10. Brake and auxiliary systems
11. Suspension bracket and steering
12. Body
13. Onboard electric equipment
13.1. General information
13.1.1. General information and precautionary measures
13.1.2. Search of causes of failures of electric equipment
13.1.3. Safety locks - the general information
13.1.4. Chain breakers - the general information
13.1.5. The relay - the general information and check of serviceability of functioning
13.1.6. Digital tire of data of CAN
13.2. Assembly blocks and management modules
13.3. Switches
13.4. Driving electromotors, sensors
13.5. Alarm and lighting devices
13.6. Systems of additional safety (SRS)
13.7. Audiosystem, navigation and mobile phone
14. Schemes of electric connections



13.1. General information

General information and precautionary measures

Before starting service of components of systems of onboard electric equipment familiarize with requirements of safety regulations at work with electric devices!

The car is equipped with a 12-voltny onboard power supply system with grounding on a negative pole. Supply of electricity to lighting devices and other consumers is carried out from the storage battery of the lead-acid type which additional charge is made from the generator of an alternating current.

The description of procedures of repair and service of the electric components which are established on the car and not having the direct connection to operation of the engine is provided in the present Chapter. Information on service of such units as the storage battery, components of system of ignition, the generator and a starter is given in the Head of System of electric equipment of the engine, devoted to systems of electric equipment of the engine.

Before starting service of components of onboard electric equipment, in order to avoid receiving electric shock, or ignition as a result of short circuit, it is necessary to disconnect a negative wire from the battery. Regularly check a condition of plaits of electroconducting and reliability of their fastening in intermediate clamps, collars and bindings. Watch, that isolation of wires was not wiped about the components located in the neighbourhood.

Models of cars considered in the real Management are equipped with system of additional safety (SRS). Before starting performance of any works near the block of a safety cushion, a steering column or the dashboard, disconnect SRS in order to avoid receiving traumas as a result of its casual operation (see.), - electroconducting of a chain of SRS it is easy to distinguish a part of System of additional safety (SRS) on yellow color of isolation!

If the stereosystem established on the car is equipped with a security code before disconnecting the battery without use of the auxiliary accumulator make sure that have the correct combination for audiosystem input in action!

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13.1.1. General information and precautionary measures